Hardhatz wrote:
Thanks for the info and link!
So, as I'm trying to wrap my head around all this, a couple of things caught my eye...:
1. I see that the High and Low switching circuit works in series, addresses the ECU, and functions by grounding.
So, I may have overlooked that grounding point. Have any idea where that might be?
2. Concurrently, I observe that the electric fan does not come on. Before it always ran when the A/C was on.
I infer that this points to the high-pressure switch.
Mockery cheerfully accepted if I am off on a wrong tangent...
The fuses mentioned above checked out ok, and the system is otherwise AOK.
WWD, looking at your accessory list prompts me to ask other questions, but not wanting to hijack the thread, I will do it separately.
Thx!
Yes, the high and low pressure switches are wired in series according to the FSM.
As to grounds, the FSM actually shows you pictures of where all the grounds are located.
According to the FSM, one (G103) is on the side of engine right near the oil dip stick tube bracket above the starter.
Grounds G103, and G113.
See these pages in the FSM
G103 (Diesel) Right Front Side of Engine, diagram 21 -- See Section 8W-91 page 35
G112 Left Front Side of Engine Compartment, diagram 31 See Section 8W - 91 - page 44
This one is right below the power distribution center, it is right behind the left front headlight assembly located on top of the fender well.
Quite a few have had problems with this ground.
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